Can you identify these things?

[Ocean Lotion]

They were probably there hidden by the hair algae if it was thick enough to hide them.
Those sharp pointed boogers can be black, red, maroon, pink, tan or brown in color.
I've seen many different colors to their tubes, can't explain it but would suppose it has something to do with chemistry and nutrients available to them along with other factors such as light.

You could spend some time snapping them off with coral cutters and removing them from the tank.
They are a pain in the finger haha

Need to start skimming again today and hope their population drops.